ZHAO Jiale1,TONG Xin1,2,LI Zhanfu2,3,CUI Dehai1
(1.Colleg of Mechanical Engineering and Automation,HuaQiao University,Xiamen 361021,China;2.Fujian Province CNC Equipment Industry Research Institute,Fujian University of Technology,Fuzhou 350118,China;3.CSCEC Strait Construction and Development Co.,Ltd.，Fuzhou 350000，China)
Abstract:In order to improve the screening efficiency of the vibrating screen,the discrete element method was used to simulate the screening process of vibrating screen,and analyzed the impact of the particle contact probability and particle penetration probability on screening efficiency.The data model of sieve machine parameters and particle contact probability and particle penetration probability was established by random forest algorithm，and analyzed the weight and rule of the influence of the parameters of each vibration screen parameters on the particle contact probability and particle penetration probability.The results show that the particle contact probability is mainly influenced by vibration frequency,vibration amplitude and vibration direction angle.The particle penetration probability is mainly influenced by screen inclination angle and screen aperture size.The cuckoo search algorithm was used to optimized parameters,and the optimal combination of vibrating screen parameters is obtained as follows that vibration frequency is 15 Hz,vibration amplitude is 2 mm,vibration direction angle is 50°,screen inclination angle is 20°,screen length is 160 mm,screen aperture size is 1.0 mm,and screen wire diameter is 0.7 mm.
Keywords:discrete element method;particle contact probability;particle penetration probability;random forest algorithm;parameter optimization
中图分类号： TD452 文献标志码：A
文章编号：1008-5548(2022)04-0125-09
DOI:10.13732/j.issn.1008-5548.2022.04.014
收稿日期： 2022-02-23， 修回日期：2022-06-01，在线出版时间：2022-06-22。
基金项目：福建省自然科学基金项目，编号：2020J01870。
第一作者简介：赵嘉乐(1997—)，男，硕士研究生，研究方向为计算机辅助设计与工程。E-mail:19013080048@stu.hqu.edu.cn。
通信作者简介：童昕(1964—)，男，教授，博士生导师，研究方向为计算机辅助设计。E-mail:Tongxin_hqu_fjut@163.com。
